As the industry shifted from physical media (DVD/Blu-ray) to streaming, legitimate services adopted this model. Platforms like Netflix and Disney+ default to the user's regional language settings but retain the option to switch to the original Korean audio. This standardization has legitimized the dual audio format, moving it from the fringes of piracy to the center of mainstream media consumption.
Highlight an audio track and look at the properties panel. Set the "Language" tag to kor for Korean and the respective code for your dub. Korean Movie Dual Audio
This format allows the viewer to switch between languages instantly using their media player controls (e.g., VLC Media Player, MX Player), offering a versatile viewing experience without needing two separate files. As the industry shifted from physical media (DVD/Blu-ray)
Finding dual audio content is easiest on major subscription-based platforms: Highlight an audio track and look at the properties panel